Making auxiliary mordants containing titanium and glycolic acid.



by,'according to the urpose in question glyinr'r arr OTTO LIEBKNECHT, 0F FRANKFORT-ON-THE-MAIN, AND FERDINAND BLUMENTHAL,

' OF WIESBADEN, GERMANY.

MAKING AUX'ILIARY'MORDANTS CONTAINING TITANIUM AND GLYCOLIC ACID.

110 Drawing.

Specification of Letters Patent.

Application filed October 16, 1911. Serial No. 655,054.

Patented Apr. 22, 1913.

To all whom it may concern:

Be 1t known that we, OTTO LIEBKNEOHT and FERDINAND BLU ENTHAL, cltizens of the German Empire, and residents, respec-' tively, of Frankfort-on the-Main and VViesbaden, Germany have invented certain new and-useful Improvements in Making Auxiliary Mordants Containing Titanium and Glycolic Acid, and of which the following is a specification.

This invention relates to the production of salts of titanium and glycolic acid, to be used as auxiliary mordants.

We succeeded in producing compounds which may be used as'excellent auxiliary mordants, and for similar pur oses by com bining titanic acidwith glycolic acid. Such compounds have not been known heretofore. They are obtained in the following manner:

To an aqueous solution of glycolic acid,

titanic acid is added in the presence of alkalies or alkaline earth-metals, or to a solution of freshly precipitated acid glycolates the titanic acid is added, which is readily dissolved when heated. Similar compounds are produced by treating the titanates, for-instance, acid sodium titanate, which are obtained by decomposing heated mineral titanic acid with alkalles, or alkaline carbonates, directly with glycolic acid; Finally also titanic acid salts, such as titanium sulfate, titanium chlorid, titanium oxalate, the double salt of potassium titanium oxalate, etc., may be treated with glycolates, wherecolates are applied, t e bases of which form soluble or insoluble products with the subfiltered, contain principally only titanic acid,

glycolic acid and an alkali 'or an alkaline earth-metal; in every case, however, a mixture of salts is produced whichcontains besides the glycolate of titanic acid also other salts As for dissolving the titanic acid an excess of glycolic acid is'required, it is necessary to fix the quantity of the base bound to the glycolic acid accordingly, for instance, when alkaline solutions of glycolic acid are employed the acid has to be neutralized later on by adding bases. The technical production of these salts is obvious from the foregoing without further explanation as thereby alkaline salts or salts of thealkaline earthmetals, or mixtures of both, may be produced according to the purpose desired.

We claim:

1. The herein described process of connames to this specification in the presence of two subscribing witnesses.

' OTTG LIEBKNECHT. FERDINAND BLUMENTHAL. Witnesses:

JEAN GRUND, CARL Gnunn. 

